Abrasive-paper-manufacturing machine



'H. BEHR.

ABRASIVE PAPER MANUFAQTURING MACHINE.

' APPLICATION FILED NOV-29,1919. 1,3575943. Patented Nov. 9, 1920. 5suns-sum I.

H. BEHR.

ABRASIVE PAPER MANUFACTURING MACHINE.

APPLICATlON FILED NOV. 29. 1919.

1,357,943. 7 Patented Nov. 9, 1920.

5 SHEETSSHEET 2.

H. BEHR.

ABRASIVE PAPER MANUFACTURING MACHINE.

APPLICATION FILED NOV-29,19I9.

Patented Nov. 9, 1920.

5 SHEETSSHEET 3.

H. BEHR.

ABRASIVE PAPER MANUFACTURING MACHINE.

APPLlCATION man NOV. 29, 1919. 1,357,943. Patented Nov. 9,1920.

5 SHEETS-SHEET 4.

It. M avwawtoz 85% @JM PATENT OFFICE.

HERMAN" BET-IR, or new YORK, n. Y.

ABBAS-IVE-PAPERMANUFACTURING MACHINE.

Specification of Letters Patent.

Patented Nov. 9, 1920.

Application filed November 29, 1919. Serial No. 341,471.

To all w 7: am it may concern Be it known that I, HERMAN BEHR, a citizenof the United States, residing in the city, county, and State of NewYork, have invented certain new and useful Improvements in AbrasivePaper Manufacturing Machines, of which the following is a specification.

This invention relates to abrasive-papermanufacturing machines, butmachines embodying this invention may be used for very differentpurposes. The main object of the invention is to deposit adhesive orother fluid under regulated control, on sheet material during the travelof that material,

and with accuracy as to evenness and thick ness or thinness of deposit;and this is a very important economic matter for reasons fully set forthin my application Serial No. 341,470, filed Nov. 29, 1919. The presentmachine embodies some of the features set forth in said application, butin a mechani- .of the present invention, a substantial saving ofadhesiveis effected with a consequent substantial saving of the abrasivethat is deposited on the underlying deposit of adhesive; and successiveruns of webs of backing, whether paper, cloth or otherwise, and ofabrasive, may be made with the result that repeat orders for a givenquality or .grade may be filled with exactitude, which is not the casewhen such abrasive material is made by heretofore-existing means; itbeing seldom the case that any substantial number of successive sheetsof a given grade can be produced subsequently with anything likeexactitude in respect to quantity of adhesive and quantity of abrasive;and it is largely due to the relative proportions of the adhesive and ofthe abrasive on a paper or cloth back of uniform thickness that thequality of a given grade of abrasive material is due. I

In the accompanying drawings forming a part hereof,

Figure 1 is a side elevational diagrammatic view in part, of so much ofa known sandpaper manufacturing apparatus as is necessary to be shown inconnection with the present invention; and in part, of such apparatuswhen it embodies features of this invention. The view shows in endelevation looking from a side of the machine, my new gluing apparatuswith a web of backing running through it and past means for applicationof abrasive on the previously deposited layer of adhesive on the uppersur face of the web, the usual pneumatic webfeeding drum being alsoshown.

Fig. 2 is a front elevation of a machine embodying this invention,showing a web in place.

Fig. 3 is an elevation of the right-hand side of the machine viewed fromin front as in Fig. 2, and partially shows the over-' headfriction-driving mechanism for the machine.

F 1g. 4 is a top plan View of the machine and is, intended particularlyto show the overhead friction-driving mechanism shown in Fig. 3.

Fig. 5 is a vertical central sectional view showing the distributingcross-head shown in Fig; 2, and the rod valves for the exit slit closed.

F ig; 6 is an end View of the distributing cross-head;

Fig. 7 a transverse section thereof at line 7-7 of Fig. 6;

Fig. 8 is an enlarged view showing one of the rod-valve operating camand spring mechanisms with the drive or main shaft of the machineconnecting with the shaft of the web support for rotating the latter;

Fig. 9 is a partial face view of a portion of a web of suitable, backingon which separated disk deposits of adhesive. or other liquid are shown;and

Fig. 10 is a transverse section at line 10l0 of Fig. 1, showing the nutand threaded piston rod construction.

Referring to that form of the invention shown in the drawings, 1indicate upstand- 1ng side frames of the gluing machine; 2 a transverseroll'past which the web W of flexible backing runs upwardly through atransverse slot a through the floor A on which the machine is located; 3indicates supporting roll 4 which is the preferable form ofwork-support, or support for the 7 material to be treated. From roll 4:the web is shown ext-ending rearward over a transverse drum 5 with theupper surface of the web in contact with a transverse wiper 6, the webwith its upper surface faced with adhesive running over a transversesupporting roll 7, and thence under means for depositing abrasive on theadhesive on the backing and shown as the usual sander S, and thence overa pneumatic-suction webfeed drum 8 by which the web is continuouslypulled from the web-supporting roll rearwardly under the sander, andthence to the festooning mechanism referred to but not shown. -In Fig.1, I show in dotted lines 12?, the old gluing roll that ran in a gluetrough and deposited the glue or matrlx on the web as it turned upwardover the front, web-supporting roll 1. Said glue-roll w and its troughare now dispensed with and the upper surface of the web lV at the upperperipheral crown of the roller 4 has the adhesive deposited onit by alengthwisechambered glue-depositing crosshead, parallel to and extendinglengthwise of the upper peripheral crown of roll 4.

The gluing machine is shown provided with inward upstanding posts 9 eachof which is transversely alined with an outward upstanding side frame 1.The main shaft of the present machine is indicated by M and has hearingsin each frame member land 9. The glue-depositing crosshead is indicatedby. 10. The shaft M is equipped with a stepped belt pulley 11 forapplication of power. The glue-depositing crosshead-is formed of alengthwise-split tube the ends of which are eXteriorly screwthreaded at12, each end of the split tube being provided with a screw cap 13 on itsthreaded end; and the members of the split tube are otherwise held intubular assemblage by arcuate clamps 14 and screws 15 through thearcuate clamps, the free ends of each clamp embracing the upper splittube member and. extending downwardly into engagement with upper opposedportions of the under split tube member which is formed at its bottomcrown portion with a lengthwiseextending glue-exit preferably in theform of a continuous slit 16 from which the adhesive is pressed outevenly and under regulable pressure upon the upper surface of the webwhile it is in continuous rearward travel from the front, web-supportingroll 1, and has its upper surface coated with glue from edge to edgeorbetween its edges, according to the adjustment of thelengthwise-aimed, endwise-movable, rod-. valves 17 each of whichprojects into the chamber of the glue-distributing crosshead through astufiing'box 18 with which each cap 13 is provided in its lower portion,the

inward end portion of each rod-valve passing between interior sideguides 19 between which the rod-valves work. The guides 19 are fixed tothe interior bottom wall of the under split member of theglue-distributing crosshead, and are located adjacent and some at oneside and others at the other side of the exit slot 16. The under'surfaceof each rod-valve works in close contact with the inner wall surfacesadjacent the slot '16 The rod valves may be pushed in wholly orpartially to close the slot 16; and may be pulled out by hand whendesired to open up the exit slot 16 to any desired length, according tothe width of the web to be faced with the adhesive or to the width ofthe adhesive to be deposited on the web.

For obtainment of a determinable thickness of adhesive on the websurface to be treated, and in order to secure uniformity of thickness ofthe deposited adhesive, the glue-depositing crosshead is, preferably andby one feature of this invention, supplied with adhesive which is undera forced and constant pressure feed that is regulable by means ofvariable-speed and piston mechanisms whereby, for a given quality ofadhesive at a given temperature, with the web traveling at apredetermined speed, and with the controllable forced feed adjusted to aknown operating condition, it is practical not only to deposit theadhesive uniformly on either all or selected parts of a length of web inits travel; but also, for subsequent repeat orders, similarly to depositthe adhesive on other webs, corresponding in thickness of deposit to thecondition of earlier-treated webs. To this end, the distributingcrosshead 10 is connected at its upper side with preferably branchedconduit members 20 connected at their tops with a union 21 which, at itstop, is connected with a conduit 22 dependent from the bottom of a mainand cylindrical upstanding container 23 for the adhesive or glue, thiscontainer being supported on the top of an upstanding frame member 24:above and over the distributing crosshead, the container 23 holding thesupply of adhesive for the distributing crosshead. The branched conduitmembers 20 as shown are three in number, the outermost members severallyconnecting with the distributing crosshead near an end thereof and theintermediate branch member connecting with the distributing crossheadmidway between its ends. In this way close uniformity of supply ofadhesive to the chamber of the transverse distributing crosshead isobtainable. The upstanding main cylindrical container 23 is open at itstop and provided with apiston 25 descent of which forces adhesive intothe distributing crosshead through said conduits. The piston is providedwith an upstanding threaded piston-rod 26, the lower end of which isfixed to the piston which, by the present construction, is given arotary movement whenever it is moved clownwardly or upwardly in thecontainer 23. The threaded piston rod extends upwardly through a nutportion 27 of a top bracket 28 having dependent arms 29 which opposedlyembrace the upper end of the container 23, the latter being detachablysecured to the bracket arms by set-screws 30. This bracket 28 has anupwardly-extending arm 31provided with a horizontal lug 32 through whichbolts 33 pass into the ceiling of the room of installation; but thebracket may be, if desired, otherwise rigidly installed. Above thebracket 28, the threaded piston rod 26 extends upwardly through the hub34 of a beveled gear the hub bor'e being provided with aninteriorly-projecting feather 36 which is entrant in a groove37 formedlengthwise of the piston rod 26. Rotation of the beveled gear in onedirec tion compels rotational descent, and in the other compelsrotational ascent of the piston in the cylindrical container 28. Abeveled gear 38 in constant mesh with the beveled gear 35 constitutesthe driving gear for the beveled gear 35, and also constitutes apiston-actuating gear. This beveled gear 38 is fixed on the shaft 39 ofan'under cone pulley 40, the shaft being journaled in theyupwardly-extending arm 31 and also in a hanger 41 fixed to the ceilingin parallelism to the arm 31 Above the shaft 39 there is an upper andtherewith-parallel shaft 42 similarly journaled in the arm 31 and hanger41, and provided with a cone pulley 48, these two cone pulleys and theirencircling edgewise-shiftable belt 44 forming a well-known kind ofchange-speed mechanism. By adjustment of the belt 44 in a well-known waythe intermeshed beveled gears 38 and 35 may have a variable drivingspeed given to them for the purpose of varying the speed of the descentof the piston 25 in the container. It will be noted that the beveledgear 35 is of considerably larger diameter than the beveled gear 38, andconsequently, owing to such relations of the two beveled gears one tothe other, they together constitute av speed-reduction mechanism. Theupper cone pulley shaft 42 is provided with a pulley 45 outwardly of thehanger 41, the pulley 45 having a friction peripheral surface 46. Apairof hangers 47 dependent from the ceiling and spaced laterally apartone behind the other, and in a direction corresponding to the frontandrear position of the under part of the machine, have their under endsconnected by a horizontal, forwardly and rearwardly extendingquadrangular bearing-block guideframe 48. dicated by 49 is slidablymounted in this guide-frame and is at its rear side connected I pulley63 A journal or bearing-block iii-- with the necked inner end of ahorizontal rearwardlyextending bearing-block adjusting-spindle 50, therearward end-portion of which is slidably mounted through an openf ingat 51 in the rearward vertical wall of said frame 48 so that thisbearing-block may be adjusted back and forth relatively to the frictionpulley 45. Said bearing-block carries a transverse driven shaft 52 whichprojects from each end of the bearing-block and which at its inward endis provided with an elliptical cam 53, the larger end of the cam beingfixed to this end of the driven shaft 52. The other or outward end ofthe shaft 52 has a belt pulley 54 fixed to it, and from this pulley adriving belt 55 extends to it over a rearward pulley 56 on the linedriving shafting 57 which, adjacent to the pulley 56 is supported by aline-shafting hanger 58, and adjacent the pulley 56, outwardly of it,the driving shaft 57 is provided with a stepped pulley 59 from which abelt B extends downwardly over a stepped pulley 11 on the main shaft M.Stepped pulleys are preferably used together with belt-shiftingmechanism, not shown, for belt B in order to drive the main shaft M atvarious selected speeds from the lineshaft' ing. The rearmost hanger 47has pivoted to it at 61 a lever 62 carrying a belt-tackling which restson the upper run of the belt 55 between the pulleys 54 and 56, the lowerand downwardly-inclined end of the lever 62 being provided with anadjust able weight 64. The belt B is to be mounted snugly andnon-slippably on its pulleysin orderto keep the cams 53 and 72 insynchronous relations.

shaft 73 havin a bearin in a horizontal member 74 of the bracket 68which is also shown as having a dependent arm 68 the foot of which isprovided with a tubular bearing 68 through which the main shaft M passesinwardly of the beveled gear 65. Each side of the machine frame hasattached, as shown, directly to the outward legs 1, one of the brackets68 and the elliptical cam, and its driving mechanism already describedin connection with the right-hand end of the machine, is repeated at thelefthand end, the main shaft M at the left-hand end also being providedwith a beveled gear 65. The outer end of each rod valve 17 is providedwith a cam-engaging roll 17*, and

each cam rod is provided outwardly of the distributing crosshead with anupstanding bearing support 75 secured to the machine frame and locatedadjacent an outward end of the top surface of the machine frame, eachelliptical valve 72 being in constant engagement with a cam roll 17 andeach rodvalve outwardly of the distributing crosshead or distributer andbetween the end of the distributer and the support 75, having a fixedcollar 76 the inward face of which forms an abutment for a coil spring77 which encircles the rod-valve and has its inward end in abutmentagainst a stufiing box 18 on an end of the distributef 10. The result isthat as the elliptical cams rotate, the springs 77 press each rod valveoutwardly against the periphery of an elliptical valve thus effectingthe separation of the inward ends of the rod-valves and graduallyopening the fluid exit in the bottom of the distributer according to theperipheral contour of the elliptical valve for outflow on the surface ofthe web carried by and fed over the roll 4 in the rearward direction bythe pull of the pneumatic drum or feeding device 8.

For the reason that it is desired to keep the glue or other fluid withwhich the distributer is supplied under more or less pressure, and forthe reason that such pressure causes an objectionable etting out of theadhesive or other fluid through the. exit of the distributer. especiallywhen the rod-valves are initially separated, to the detriment of theevenness and desired character of the deposit on the web provision ismade whereby the operator can at will not only during such f initialseparation of the rod-valves, but also at any other time when it maybecome desirable to do so, arrest the rotation of the threaded pistonrod 37, by throwing the elliptical friction driving cam 53 out ofworking contact with the friction pulley 46; and this is readilyaccomplished by a movement of the accessible handle 7 8 of the handlever 79 which is shown pivoted at 80 to an arm 81 from the hanger 47,and provided with an upper arm 82. the upper end of which is looselyjointed at 83 to the outward end of the spindle connected with thesliding ournal box 49.

- This lever may be moved in either direction to move the journal box 49forwardly or rearwardly and thereby to adjust the cam into or out ofworking position with the friction pulley 46 by rotation of which bymeans described, the piston rod is rotated. At alltimes during suchadjustments the weightediever 62 moves automatically with itsbelt-engaging roll 63 in continuous contact with 'the upper run of thebelt 55, and the slidable bearingblock 49 is kept nor mally pressedforward to keep the periphery of the elliptical cam 53 in workingcontact with the friction pulley 46 bymeans of a coil spring 84 aroundthe spindle 50 between the rear side of the bearing-block and acollar 85on the spindle.

The frame 24 is shown provided with a catch lug 85, the lever 79 beingprovided with a catch 86 for engagement of the catch lug 85 whereby thelever 79 may beheld in the desired position with the cam 53 either in orout of contact with the friction wheel 46.

In the present case it would be necessary to reverse the direction ofrotation of the line shafting, which is not to be desired, in order toreverse the direction of rotation of the lntermeshing gears 38 and 35from which the threaded piston rod 26 is screwed down through theinternally threaded nut 27 with whlch the threads of the piston red areconstant engagement; rotation of the gear and of the feather 36 workingin the piston rod slot 37 compelling downward rotation of the threadedpiston rod through its'nut, and the walls of the lengthwiseextendinggroove 37 of the piston rod being in shdable engagement with thatportion of the feather projecting into the groove 87. Consequently inorder to reverse the direct on of rotation'of the piston rod 26 forlifting the piston from its lowest position to an upper position orentirely above the top of the container 23, I provide the shaft 39 witha square projection 87 for application of a hand crank by means of whichwhen the cam 53 is out of contact with the friction wheel 46 the shaft39 may be readily turned in the appropriate direction to lift the piston25.

In F ig. 9 a plurality of deposits y are shown on the web W, thedeposits beingverse diametrical line of the disk to be formed is reachedwhen the coacting cams 72, valve rod 17 and springs 77 cause a gradualapproach of the free ends of the cam rods at the completion of a givendisk. A considerable variety of different shapes of deposit may beeffected during the continuous rearward travel of the web or backingduring its feed movement, according to the configuration of theperipheries of the cams 72. If abrasive material is to be made, theabrasive is deposited on the adhesive deposits on the web from thesander S, but when disks are to be made the transverse spreader 6 is tobe removed in order to prevent spreading of the adhesive disks. Byremoving the cams 72 and pulling the rod valves outwardly into a movableposition according to the width of the web, the slit 16 will be openedsutiiciently to permit the deposit of the adhesive continuously acrossthe full width of the upper surface of the web.

Obviously the machinemay be used for various other purposes than thedeposit of adhesive and the formation of abrasive material. Any desiredliquid may be distributed on the web. So also various kindsof materialother than abrasive may be de posited on the web from the sander S. Astriking advantage of the present machine is that the operator caninstantly arrest the descent and consequently the pressure of the piston25 on the contained liquid, and thereby prevent spurting or jetting outof the liquid at the initial opening of the rod valve and at other timeswhen necessary Umformity of deposit is always of importance, but it isof very great and particular importance in the manufacture of sandpaperv and other sheet abrasive material, for reasons more fully set forth inmy companion application Serial No. 341,470, filed November 29, 191.9,and also in my method application Serial No. 344,472, filed November 29,1919.

lVhat I claim is.-

1. The combination of a revoluble websupport; a liquid-distributerhaving an exit opposed to said support; a pair of allned reciprocatingrod-valves for said exit; a driven shaft cperatively connected with therevoluble web-support; for each rod-valve a cam for moving the rod valvein one direction and a spring for moving the rod valve in the otherdirection; and means for operatively connecting each such cam with thedriven shaft for giving simultaneous endwise movements to the rod valvesand webt'eeding' mechanism.

2. he combination of a revoluble websupport; a liquid-distributer havingan exit opposed to said support; a valve for said exit; a driven shaftoperatively connected with the revoluble web-support for rotating thelatter; a valve-actuating device operatively connected with the drivenshaft; a web mechanism; a driving shaft; means operatively connectingthe driving shaft with the driven shaft; a change-speed mechanismprovided with a driving gear; means for operatively connecting thechange-speed mechanism with the driven shaft; a vertically-movablerevoluble piston-rod; mechanism for o1 eratively connecting the pistonrod with the driving gear of the changespeed mechanism; aliquid-container pro vided with a piston from which the piston rodextends, the container communicating with the distributer; and aweb-feeding mechanism located rearwardlv of the websupport; I

3. The combination of a revoluble websupport; a liqiiid-distributerhaving an exit opposed to said support; a valve for said exit; a drivenshaft operatively connected with the revoluble websupptn't for rotatingthe latter; a valve-actuating device opera tively connected with thedriven shaft; a web-feeding mechanism; a driving shaft;

means operativelv connecting the driving.

shaft with the driven shaft; a changespeed mechanism provided with adriving gear; means for opcratively connecting the change-speedmecl'ianism-with the driven. shaft; a vertically-movable revolublepistonrod; mechanism for operatively connecting the piston rod with thedriving gear of the change-speed mechanism; a liquid-container providedwith a piston from which the piston rod extends. the containercommunieating with the distributer; a web-feeding mechanism; and meansunder the control of the operator for arresting the movement of -the.piston at will.

4. The combination of a revoluble websupport; a liquid-distributorhaving an exit opposedto said support; a pair of alined reciprocatingrod-valves for said exit; a driven shaft operatively connected with therevoluble websupport; for each rod-valve, acam for moving the rod valvein the other direction; means for operatively connecting each such camwith the driven shaft for giving simultaneous-endwise movements to therod valves and web-feeding mechanism; a driving shaft; means foroperatively connecting it with the driven shaft; a change speedmechanism provided with a driving gear; means for operatively connectingthe change-speed mechanism with the driven shaft; a vertically-movablerevoluble pistonrod; mechanism for operatively connecting it with thedriving gear of the ehangespeed mechanism; a liquid container providedwith a piston from which the piston rod extends the containercommunicating with the distributer; a web-feeding mechanism; and meansunder the control of the operator for arresting the descent of thepiston at Will.

5. The combination of a revoluble websupporting roll; apparatus providedwith an exit for forcing a fluid through the exit under artificialpressure on the liquid in the container; means for creating suchpressure; a disk-framing valvular mechanism for said exit; means foroperating such valvular disk-forming mechanism; and means under thecontrol of the operator for relieving said pressure at will. said meanscomprising a friction wheel and a therewith-disconectible cam fordriving said friction wheel.

6. in a machine of the class specified, the combination of a liquidcontainer having an exit; a revoluble and endwise-Inoving piston forsaid container; a piston rod for the piston; mechanism for rotating thepiston rod; means to'compel its descent during its rotation; and forcooperation With the mechanism for rotating the piston rod, a cammounted in a sliding journal box; said sliding journal box; and meansunder the con trol of the operator for moving said journal box to carrythe cam into and out of operative position.

In testimony whereof I have hereunto set my hand this 28th day ofNovember, 1919. HERMAN BEHR.

